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Could someone help in writing a shell script to monitor different cron jobs in crontab. As everyone knows different cron jobs run at different time I want to capture following things in ".csv" format:

  1. Script Name
  2. Scheduled times
  3. Next scheduled time
  4. Last Run time.
  5. Did the script ended successfully or it had an error after executing (Success/Fail).

I have certain limitations:

  1. syslog is not printing all the debug logs.
  2. Can't edit crontab.

I have logs which are directed which could be used.

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    Unless you have root access this is next to impossible because the necessary information is not available to non- root users. If you do have root you can edit crontab (technically, if not administratively).
    – Chris Davies
    Commented Mar 31, 2018 at 13:41
  • logs cannot be used???
    – Vivek
    Commented Mar 31, 2018 at 15:50
  • cron scheduling syntax is pretty hairy. what's the difference between 2,3,4
    – Jasen
    Commented Apr 1, 2018 at 8:50
  • if Vixie cron use -L15 on the command-line
    – Jasen
    Commented Apr 1, 2018 at 8:52

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Given the criteria you have specified this is not possible.

The necessary information is not available to non- root users. If you do have root you can edit crontab (technically, if not administratively) or change the flags used to run from, or read the cron log files.

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